Video reproduction apparatus with fast post-processing and...

Details Video reproduction apparatus with fast post-processing and... Video reproduction apparatus with fast post-processing and...

2007-01-09

2007-01-09

Vo, Tung (Department: 2621)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

Reexamination Certificate

active

10293774

ABSTRACT:
Provided are a video reproduction apparatus and method capable of effectively post-processing a video signal using a motion vector, a post-processed video signal and a difference video signal. The method includes the steps of (a) variable length decoding the compressed video signal to detect quantized discrete cosine transform (DCT) coefficients and a motion vector, when the compressed video signal is input as a bit stream; (b) inversely quantizing the quantized DCT coefficients detected in (a); (c) performing an inverse DCT (IDCT) on the DCT coefficients obtained in (a) to detect a difference video signal; and (d) selectively performing post-processing on the decoded video signal, based on the motion vector detected in (a) and the characteristics of the difference video signal detected in (c).

REFERENCES:
patent: 5937101 (1999-08-01), Jeon et al.
patent: 6862372 (2005-03-01), Yang et al.
patent: 6983079 (2006-01-01), Kim
patent: 2002/0146072 (2002-10-01), Sun et al.
patent: 2003/0035586 (2003-02-01), Chou et al.
patent: 2003/0053711 (2003-03-01), Kim
patent: 2003/0152146 (2003-08-01), Lin et al.
patent: 2001-224031 (2001-08-01), None
Machine English translation of JP 2001-224031 cited in the IDS of Feb. 10, 2005.

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